The mind is a strange machine which can combine the materials offered to it in the most astonishing ways.

Although this may seem a paradox, all exact science is dominated by the idea of approximation. When a man tells you that he knows the exact truth about anything, you are safe in inferring that he is an inexact man. Every careful measurement in science is always given with the probable error ... every observer admits that he is likely wrong, and knows about how much wrong he is likely to be.

Great God in Boots! – the ontological argument is sound!

The white tails of rabbits, according to some theologians, have a purpose, namely to make it easier for sportsmen to shoot them.

The immense majority of intellectually eminent men disbelieve in the Christian religion, but they conceal the fact in public, because they are afraid of losing their incomes.

What the world needs is not dogma but an attitude of scientific inquiry combined with a belief that the torture of millions is not desirable, whether inflicted by Stalin or by a Deity imagined in the likeness of the believer

The fundamental defect of fathers, in our competitive society, is that they want their children to be a credit to them.